CORSAs Patented Reflective Sound Cancellation® (RSC) Technology allows acoustic engineers to create a drone free exhaust sound, styled specifically to fit the personality of your vehicle. Each system is designed to increase vehicle performance, deliver an AGGRESSIVE SOUND under acceleration and a DRONE-FREE EXPERIENCE during cruise. Performance gains are not affected by sound choice. Sport Cat-Back Exhaust System; Dual Rear Exit; 3 in. Dia.; Incl. Muffler/Pipes/Clamps/Twin 3.5 in. Polished Pro-Series Tips; 15-16 WRX/STI 2.0/2.5T Fitment: 2015 Subaru WRX Base 2015 Subaru WRX Limited 2015 Subaru WRX Premium 2015 Subaru WRX STI Base 2015 Subaru WRX STI Launch Edition 2015 Subaru WRX STI Limited 2016 Subaru WRX Base 2016 Subaru WRX Limited 2016 Subaru WRX Premium 2016 Subaru WRX STI Base 2016 Subaru WRX STI Limited 2016 Subaru WRX STI Series.HyperBlue 2017 Subaru WRX Base 2017 Subaru WRX Limited 2017 Subaru WRX Premium 2017 Subaru WRX STI Base 2017 Subaru WRX STI Limited 2018 Subaru WRX Base 2018 Subaru WRX Limited 2018 Subaru WRX Premium 2018 Subaru WRX STI Base 2018 Subaru WRX STI Limited 2019 Subaru WRX Base 2019 Subaru WRX Limited 2019 Subaru WRX Premium 2019 Subaru WRX STI Base 2019 Subaru WRX STI Limited 2020 Subaru WRX Base 2020 Subaru WRX Limited 2020 Subaru WRX Premium 2020 Subaru WRX STI Base 2020 Subaru WRX STI Limited